This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 18 |
| 2 | 169 |
| 3 | 880 |
| 4 | 3249 |
| 5 | 9522 |
| 6 | 23753 |
| 7 | 52544 |
| 8 | 106009 |
| 9 | 198770 |
| 10 | 351233 |
| 11 | 590832 |
| 12 | 953625 |
| 13 | 1485778 |
| 14 | 2245489 |
| 15 | 3304704 |
| 16 | 4751377 |
| 17 | 6691410 |
| 18 | 9251257 |
| 19 | 12580080 |
| 20 | 16852705 |
| 21 | 22271986 |
| 22 | 29072121 |
| 23 | 37521216 |
| 24 | 47924969 |
| 25 | 60629426 |
| 26 | 76025041 |
| 27 | 94549616 |